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Showing posts with the label stripping

What is die cutting operation? List any six die cutting operations with sketch

Die cutting operation :   Die cutting which is used to various purpose i n our uses. Six   die cutting operation with sketch:   a)blanked part perced holes b)Lancing operation c) Cut off operation d)Parting operation e)Notching operation f) Shaving operation Sketch:      Problem:   A 2- inch square hole is to be pierced in 1020 steel, which is 0.062 in. thick. If shear strength of stock material is 25 ton/in 2 , what is the cutting and stripping force required? Solution:   Given data, t=0.062 inch, S=25 ton/in 2 P=2+2+2+2=8” So, cutting force, F= spt                                       =25*8*0.062                                      =12.4 tons (Ans)                                                                                               Stripping force, f s =850 pt                                 =850*8*0.062                                 =421.61 lb (Ans)